Mechanical Engineering Answers

Calculate the volume percentage change as iron transform from FCC to BCC if the atomic radii are 1.270A and 1.241 A respectively

This section specially related to IoT application that you have asked to develop individually. This year we are dealing with Smart Agriculture/ farming or gardening applications and smart health home that are connected to many IoT sensor nodes to measure and deliver useful data. You are asked to prepare a complete designed report that describe,

·  Sensors (2 or many)

·  IoT processor/ controller

·  Data transmission

·  Data display for monitoring online

·  Data storing and

·  Complete software platform and other hardware related to interface to main processor.

·  The design and development that you have produced will have far reaching applications in Domestic and commercial sectors.

Explain what uses an embedded system can have in current and emerging technology, critically evaluating such embedded applications, identifying trends and recognizing technical and economic factors.

You asked to prepare a software code/ design report on mobile robot programming to implement the functions described in the previous part for the application. Following your hardware selection, pin assignments and interfacing requirements in Part above, you need to develop the produce a software interface / code to perform the operation of the mobile robot. Produce the following

·  written code so the engineering design fully functions

·  a simulation run to test and debug the written code

·  a critical evaluation of the written code in terms of functional success.

prepare a design report on mobile robot design for the application. Following your microcontroller selection for the application assigned above, you need to develop the external connections that will be made to its hardware. Produce the following

·  description on specifications, features and functions of the mobile robot application

·  pin assignments for inputs and outputs

·  simple design for circuitry, sensors and actuators that are suited to your application

·  the application of the design in a physical context to check and critically evaluate its functionality and effective interfacing

a record of any adaptations required as the prototype develops and to develop it to a commercial solution/ product

specify and select a microcontroller from current available devices and include the following within the report:

• an explanation of the hardware interfaces of a selected microcontroller of the topic/ application that was assigned/selected and

• a critical evaluation of the software architecture that operates within your selected microcontroller in terms of its subsystems and characteristics that required to perform the application functions.

A multiple-disc clutch has four discs on the driving shaft and three on the driven shaft. The inside diameter of the contact surface is 140 mm. Find out the number of pairs of contact surfaces.

Explain with practical examples the nature of the application of

hydraulic accumulators and jacks in your context. 

two points A and B lie on a radial line of a rotating disk.The points are 50 mm apart.Va=214m/min and Vb=270m/min.Determine the radius of rotation for each of these points

A steady state, steady flow compressor draws in 500 cfm of air whose density is 0.079 lb/ft^3 and discharges it with a density of 0.304 lb/ft^3. At the suction, p1=15 psia; at discharged p2=80 psia. The increase in specific internal energy is 33.8 Btu/lb, and the heat from the air cooling is 13 Btu/lb.

Draw a helical spring of circular wire and -in terms of load, dimensions, and material- express:

1. - max. shear stress,
2. - angular deflection,
3. - spring rate,
4. - energy stored,
5. - volume of spring wire,
6. - axial deflection, and
7. - length of spring wire.